;(function($) { 

var moz = $.browser.mozilla && /gecko/i.test(navigator.userAgent);
var webkit = $.browser.safari && $.browser.version >= 3;

var expr = $.browser.msie && (function() {
 var div = document.createElement('div');
try { div.style.setExpression('width','0+0'); }
 catch(e) { return false; }
 return true;
})();
 
function sz(el, p) { 
 return parseInt($.css(el,p))||0; 
};
function hex2(s) {
 var s = parseInt(s).toString(16);
 return ( s.length < 2 ) ? '0'+s : s;
};
function gpc(node) {
 for ( ; node && node.nodeName.toLowerCase() != 'html'; node = node.parentNode ) {
var v = $.css(node,'backgroundColor');
if (v == 'rgba(0, 0, 0, 0)')
continue; // webkit
if (v.indexOf('rgb') >= 0) { 
var rgb = v.match(/\d+/g); 
return '#'+ hex2(rgb[0]) + hex2(rgb[1]) + hex2(rgb[2]);
}
if ( v && v != 'transparent' )
 return v;
}
return '#ffffff';
};

function getWidth(fx, i, width) {
 switch(fx) {
 case 'round': return Math.round(width*(1-Math.cos(Math.asin(i/width))));
case 'cool': return Math.round(width*(1+Math.cos(Math.asin(i/width))));
case 'sharp': return Math.round(width*(1-Math.cos(Math.acos(i/width))));
case 'bite': return Math.round(width*(Math.cos(Math.asin((width-i-1)/width))));
case 'slide': return Math.round(width*(Math.atan2(i,width/i)));
case 'jut': return Math.round(width*(Math.atan2(width,(width-i-1))));
case 'curl': return Math.round(width*(Math.atan(i)));
case 'tear': return Math.round(width*(Math.cos(i)));
case 'wicked': return Math.round(width*(Math.tan(i)));
case 'long': return Math.round(width*(Math.sqrt(i)));
case 'sculpt': return Math.round(width*(Math.log((width-i-1),width)));
case 'dog': return (i&1) ? (i+1) : width;
case 'dog2': return (i&2) ? (i+1) : width;
case 'dog3': return (i&3) ? (i+1) : width;
case 'fray': return (i%2)*width;
case 'notch': return width; 
case 'bevel': return i+1;
 }
};

$.fn.corner = function(options) {
	if (this.length == 0) {
 if (!$.isReady && this.selector) {
 var s = this.selector, c = this.context;
 $(function() {
 $(s,c).corner(options);
 });
 }
 return this;
	}

 return this.each(function(index){
var $this = $(this);
var o = (options || $this.attr($.fn.corner.defaults.metaAttr) || '').toLowerCase();
var keep = /keep/.test(o); // keep borders?
var cc = ((o.match(/cc:(#[0-9a-f]+)/)||[])[1]); // corner color
var sc = ((o.match(/sc:(#[0-9a-f]+)/)||[])[1]); // strip color
var width = parseInt((o.match(/(\d+)px/)||[])[1]) || 10; // corner width
var re = /round|bevel|notch|bite|cool|sharp|slide|jut|curl|tear|fray|wicked|sculpt|long|dog3|dog2|dog/;
var fx = ((o.match(re)||['round'])[0]);
var edges = { T:0, B:1 };
var opts = {
	TL: /top|tl|left/.test(o), TR: /top|tr|right/.test(o),
BL: /bottom|bl|left/.test(o), BR: /bottom|br|right/.test(o)
};
if ( !opts.TL && !opts.TR && !opts.BL && !opts.BR )
	opts = { TL:1, TR:1, BL:1, BR:1 };
			
if ($.fn.corner.defaults.useNative && fx == 'round' && (moz || webkit) && !cc && !sc) {
if (opts.TL)
	$this.css(moz ? '-moz-border-radius-topleft' : '-webkit-border-top-left-radius', width + 'px');
if (opts.TR)
	$this.css(moz ? '-moz-border-radius-topright' : '-webkit-border-top-right-radius', width + 'px');
if (opts.BL)
	$this.css(moz ? '-moz-border-radius-bottomleft' : '-webkit-border-bottom-left-radius', width + 'px');
if (opts.BR)
	$this.css(moz ? '-moz-border-radius-bottomright' : '-webkit-border-bottom-right-radius', width + 'px');
	return;
}
	
var strip = document.createElement('div');
strip.style.overflow = 'hidden';
strip.style.height = '1px';
strip.style.backgroundColor = sc || 'transparent';
strip.style.borderStyle = 'solid';

var pad = {
 T: parseInt($.css(this,'paddingTop'))||0, R: parseInt($.css(this,'paddingRight'))||0,
B: parseInt($.css(this,'paddingBottom'))||0, L: parseInt($.css(this,'paddingLeft'))||0
};

if (typeof this.style.zoom != undefined) this.style.zoom = 1; // force 'hasLayout' in IE
if (!keep) this.style.border = 'none';
strip.style.borderColor = cc || gpc(this.parentNode);
var cssHeight = $.curCSS(this, 'height');

for (var j in edges) {
 var bot = edges[j]; 
 if ((bot && (opts.BL || opts.BR)) || (!bot && (opts.TL || opts.TR))) {
 strip.style.borderStyle = 'none '+(opts[j+'R']?'solid':'none')+' none '+(opts[j+'L']?'solid':'none');
var d = document.createElement('div');
$(d).addClass('jquery-corner');
var ds = d.style;

bot ? this.appendChild(d) : this.insertBefore(d, this.firstChild);

if (bot && cssHeight != 'auto') {
if ($.css(this,'position') == 'static')
this.style.position = 'relative';
ds.position = 'absolute';
ds.bottom = ds.left = ds.padding = ds.margin = '0';
if (expr)
 ds.setExpression('width', 'this.parentNode.offsetWidth');
else
 ds.width = '100%';
}
else if (!bot && $.browser.msie) {
 if ($.css(this,'position') == 'static')
this.style.position = 'relative';
ds.position = 'absolute';
ds.top = ds.left = ds.right = ds.padding = ds.margin = '0';

if (expr) {
 var bw = sz(this,'borderLeftWidth') + sz(this,'borderRightWidth');
ds.setExpression('width', 'this.parentNode.offsetWidth - '+bw+'+ "px"');
}
else
 ds.width = '100%';
}
else {
	ds.position = 'relative';
ds.margin = !bot ? '-'+pad.T+'px -'+pad.R+'px '+(pad.T-width)+'px -'+pad.L+'px' : 
 (pad.B-width)+'px -'+pad.R+'px -'+pad.B+'px -'+pad.L+'px'; 
}

for (var i=0; i < width; i++) {
 var w = Math.max(0,getWidth(fx,i, width));
 var e = strip.cloneNode(false);
 e.style.borderWidth = '0 '+(opts[j+'R']?w:0)+'px 0 '+(opts[j+'L']?w:0)+'px';
 bot ? d.appendChild(e) : d.insertBefore(e, d.firstChild);
 }
 }
 }
 });
};

$.fn.uncorner = function() { 
	if (moz || webkit)
		this.css(moz ? '-moz-border-radius' : '-webkit-border-radius', 0);
$('div.jquery-corner', this).remove();
	return this;
};


$.fn.corner.defaults = {
	useNative: true, 
	metaAttr: 'data-corner' 
};
 
})(jQuery);
